2022 TOYOTA PRIUS PLUG-IN HYBRID heating

5346-1. Using the air conditioning system and defogger
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
NOTICE
QHumidity sensor
O Do not spray the glass cleaner on the sensor or subject it to strong impacts
O Do not stick anything on the sensor
Q To prevent 12-volt battery discharge
Do not leave the air conditioning system on longer than necessa ry when the
hybrid system is off.
Q Air outlets
The air outlets become hot when used for heating. Therefore, us e caution
and adjust the air outlets accordingly.
In order to detect fog on the windshield, a
sensor which monitors the temperature
of the windshield, the surround humidity,
etc. is installed. ( P. 531)
Follow these points to avoid damaging
the sensor:
O Do not disassemble the sensor

5366-1. Using the air conditioning system and defogger
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
QOperating conditions
The system will only operate if all of the following conditions are met:
OThe shift position is in P.
OThe power switch is off.
*
OAll doors are closed.
OThe hood is closed.
*: The Remote Air Conditioning System cannot be used for approximately 3
minutes and a half after the power switch is turned off.
QRemote Air Conditioning System automatic shut-off
The system will automatically shut off under the following conditions:
OAbout 10 minutes have passed since operation began
OAny one of the operating conditions is not met
The system may also shut off if the charge level of the hybrid battery (traction
battery) drops to low.
QConditions affecting operation
The system may not start in the following situations:
OThe charge level of the hybrid battery (traction battery) is low
OThe outside temperature is extremely low
OWhen the hybrid system is cool (for example, after being left for a long time
in low temperatures)
QWindshield defogger
When defogging the windshield using the Remote Air Conditioning System,
defogging may be insufficient due to the power being restricted more than
during normal air conditioning operation. Also, the outside of the windshield
may fog up due to the outside temperature, humidity or air conditioning set
temperature.
QUsing the heater via the Remote Air Conditioning System
When the outside heat exchanger becomes frosted over, heating perfor-
mance may decline due to automatically switching to the frost removal opera-
tion.
QSecurity feature
Any unlocked doors will be automatically locked when the system is operat-
ing. The emergency flashers flash to indicate that the doors have been locked
or the system has been turned off.
(The doors locked: Once; The system turned off: Twice)
QConditions affecting operation
P. 286

5396-1. Using the air conditioning system and defogger
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
6
Interior features
Seat heaters
Seat heaters heat the front seats.
WARNING
OCare should be taken to prevent injury if anyone in the following categories
comes in contact with the seats when the heater is on:
• Babies, small children, the elderly, the sick and the physical ly chal-
lenged
• Persons with sensitive skin
• Persons who are fatigued
• Persons who have taken alcohol or drugs that induce sleep (sle eping
drugs, cold remedies, etc.)
O Observe the following precautions to prevent minor burns or overheating:
• Do not cover the seat with a blanket or cushion when using the seat
heater.
• Do not use seat heater more than necessary.
NOTICE
O Do not put heavy objects that have an uneven surface on the seat and do
not stick sharp objects (needles, nails, etc.) into the seat.
O To prevent 12-volt battery discharge, do not use the functions when the
hybrid system is off.

7038-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
8
When trouble arises
If your vehicle overheats
QIf the high coolant temperature warning light comes on or
flashes
Stop the vehicle in a safe place and turn off the air condition ing
system, and then stop the hybrid system.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the hybrid system has cooled down sufficiently, inspect t he
hoses and radiator core (radiator) for any leaks.
Radiator
Cooling fans
If a large amount of coolant
leaks, immediately contact
any authorized Toyota retailer
or Toyota authorized repairer,
or any reliable repairer.
The following may indicate that your vehicle is overheating.
O The high coolant temperature warning light (P. 659) comes on
or flashes, or a loss of hybrid system power is experienced. (F or
example, the vehicle speed does not increase.)
O “Hybrid System Overheated” is shown on the multi-information
display.
O Steam comes out from under the hood.
Correction procedures
1
2
3
1
2

743Alphabetical index
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
Child-protectors ....................... 276
Cleaning............................ 566, 572
Aluminum wheels .................. 567
Exterior.................................. 566
Front camera......................... 358
Hybrid battery (traction
battery) air intake vent ........ 573
Interior ................................... 572
Radar sensor ........................ 357
Seat belts .............................. 575
Water-repellent coating ......... 567
Clock ......................................... 194
Adjustment ............................ 200
Coat hooks ............................... 563
Combination meter .................. 194
Clock adjustment .................. 200
Main display .......................... 212
Multi-information display ....... 220
Warning lights and
indicators ............................ 204
Condenser ................................ 593
Console box ............................. 545
Consumption screen ............... 264
Coolant ..................................... 591
Capacity ................................ 718
Checking ............................... 591
Preparing and checking
before winter....................... 516
Cooling system ........................ 591
Engine overheating ............... 703
Hybrid system overheating ... 705
Cruise control
Dynamic radar cruise control
with full-speed range .......... 401
Cup holders .............................. 546
Curtain shield airbags ............... 39
Customizable features ............ 724Daytime running light
system .................................... 338
Deck board ............................... 550
Defogger
Outside rear view mirrors...... 527
Rear window ......................... 527
Windshield ............................ 527
Dimension ................................ 712
Display
Drive information................... 222
Dynamic radar cruise control
with full-speed range .......... 401
Energy monitor ............. 223, 261
Head-up display .................... 254
LTA (Lane Tracing Assist) .... 388
Main display .......................... 212
Multi-information display ....... 220
Parking Support Brake
function ............................... 468
Pre-collision warning............. 369
RCTA detection screen......... 423
RSA (Road Sign Assist)........ 396
S-IPA (Simple Intelligent
Parking Assist System) ...... 477
Toyota parking assist
sensor................................. 451
Warning messages ............... 665
Do-it-yourself maintenance .... 581
Door courtesy lights................ 541
Location ................................ 541
Wattage ................................ 721D

745Alphabetical index
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
Emergency brake signal ......... 510
Emergency flashers................. 646
Emergency brake signal ....... 510
Emergency tire puncture
repair kit ................................. 673
Energy monitor ................ 223, 261
Engine
Accessory mode ................... 325
Compartment ........................ 587
Engine switch ........................ 323
Exhaust gas precautions......... 50
Hood ..................................... 584
How to start the hybrid
system ................................ 323
Identification number............. 714
If the hybrid system will not
start..................................... 691
If your vehicle has to be
stopped in an emergency ... 647
Ignition switch (power
switch) ................................ 323
Overheating .......................... 703
Power switch ......................... 323
Engine coolant ......................... 591
Capacity ................................ 718
Checking ............................... 591
Preparing and checking
before winter....................... 516Engine oil ................................. 588
Capacity ................................ 715
Checking ............................... 588
Oil pressure warning light ..... 658
Preparing and checking
before winter....................... 516
Engine switch (power
switch) .................................... 323
Auto power off function ......... 325
Changing the power switch
modes................................. 325
If your vehicle has to be
stopped in an emergency ... 647
Starting the hybrid system .... 323
EPS (Electric Power
Steering)................................. 510
Function ................................ 510
Warning light ......................... 658
EV City mode switch ................. 88
EV driving range ...................... 109
EV mode ..................................... 85
EV/HV mode selection
switch ....................................... 88
Exhaust gas precautions .......... 50
Extended Headlight
Lighting system..................... 338

747Alphabetical index
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
Hooks
Coat hooks ............................ 563
Grocery bag hook ................. 551
Retaining hooks (floor mat) ..... 30
Horn .......................................... 297
HV mode ..................................... 85
Hybrid battery (traction
battery) ..................................... 98
Air intake vent ......................... 99
Charging ............................... 111
Location .................................. 98
Specification.......................... 715
Status indicator ..................... 113
Hybrid battery (traction
battery) air intake vent ............ 99
Cleaning ................................ 573
Hybrid system ............................ 84
Brake Override System ......... 310
Consumption screen ..... 234, 264
Drive-Start Control ................ 310
Emergency shut off system..... 99
Energy monitor.............. 223, 261
High voltage components ....... 98
Hybrid System Indicator ........ 226
If the hybrid system will not
start..................................... 691
Overheating .......................... 703
Plug-in hybrid system
precautions ........................... 98
Plug-in hybrid vehicle driving
tips ...................................... 105
Power switch ......................... 323
Regenerative braking .............. 93
Starting the hybrid system .... 323
Vehicle proximity notification
system .................................. 93
Hybrid System Indicator ......... 226
Hybrid transmission ................ 329Identification ............................ 713
Engine................................... 714
Vehicle .................................. 713
Ignition switch (power
switch) .................................... 323
Auto power off function ......... 325
Changing the power switch
modes................................. 325
If your vehicle has to be
stopped in an emergency ... 647
Starting the hybrid system .... 323
Illuminated entry system ........ 543
Immobilizer system ................... 74
Indicators ................................. 204
Initialization .............................. 734
Items to initialize ................... 734
Parking Support Brake
function ............................... 470
Power windows ..................... 304
S-IPA (Simple Intelligent
Parking Assist System) ...... 498
Tire pressure warning
system ................................ 602
Inside rear view mirror ............ 299
Instrument cluster light
control .................................... 196
Interior lights............................ 541
Switch ........................... 542, 543
Wattage ................................ 721
Intrusion sensor ........................ 79
ISOFIX lower anchorages ......... 70I
*: Refer to “Navigation system Owner’s manual”.

750Alphabetical index
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
Navigation system*
Odometer .................................. 214
Oil
Engine oil .............................. 715
Opener
Back door .............................. 278
Fuel filler door ....................... 353
Hood ..................................... 584
Outside rear view mirrors ....... 301
Adjustment ............................ 301
BSM (Blind Spot Monitor) ..... 423
Folding .................................. 301
Outside rear view mirror
defoggers............................ 527
Outside temperature
display .................................... 212
Overhead console.................... 548
Overheating .............................. 703
P position switch ..................... 330
Panoramic view monitor
*
Parking assist sensors
Parking Support Brake
function ............................... 462
S-IPA (Simple Intelligent
Parking Assist System)....... 473
Toyota parking
assist-sensor ...................... 450Parking brake ........................... 336
Operation .............................. 336
Parking brake engaged
warning buzzer ................... 336
Parking lock ............................. 330
Parking Support Brake
function .................................. 462
PCS (Pre-Collision System) .... 368
Enabling/disabling the
system ................................ 372
Function ................................ 368
Warning light ......................... 659
Personal lights ......................... 541
Switch ................................... 542
Wattage ................................ 721
Plug-in hybrid system ............... 84
Driving tips ............................ 105
EV City mode .......................... 85
EV driving range ................... 109
EV mode ................................. 85
EV/HV mode selection
switch ................................... 88
Features.................................. 84
How to charge....................... 155
HV mode ................................. 85
Hybrid battery (traction
battery) charge mode ........... 85
Power control unit coolant ..... 591
Capacity ................................ 718
Checking ............................... 591
Preparing and checking
before winter....................... 516
Radiator ................................ 593
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